Difference between revisions of "Exercise - Creating a Flowchart"
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The task is to produce a Flowcode flowchart that lights a lamp for ten seconds when a switch is pressed.<br /> | The task is to produce a Flowcode flowchart that lights a lamp for ten seconds when a switch is pressed.<br /> | ||
Although it may not be realistic to use a microcontroller in such a straight-forward application, it illustrates the technique of producing a Flowcode program.<br /> | Although it may not be realistic to use a microcontroller in such a straight-forward application, it illustrates the technique of producing a Flowcode program.<br /> | ||
The program itself may form part of a bigger program. | The program itself may form part of a bigger program. | ||
+ | |||
The flowchart sequence will be: | The flowchart sequence will be: | ||
− | : | + | : Check if the switch is pressed. |
:: If it isn't, go back to the beginning. | :: If it isn't, go back to the beginning. | ||
:: If it is: | :: If it is: | ||
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::: Switch off the lamp. | ::: Switch off the lamp. | ||
::: Go back to the beginning. | ::: Go back to the beginning. | ||
+ | [[File:Gen_Running_Flowcode_Startup_Selection.png||250px|right]] | ||
It takes such a short time for the microcontroller to carry this out, that we don't need to worry whether the switch latches on or not. | It takes such a short time for the microcontroller to carry this out, that we don't need to worry whether the switch latches on or not. | ||
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+ | [[File:Project_Options_Target_16F1937.png|right|250px]] | ||
: The [[Project Options]] dialogue box opens. | : The [[Project Options]] dialogue box opens. | ||
: (Click on the link for a full explanation of all the options available.) | : (Click on the link for a full explanation of all the options available.) |
Revision as of 10:17, 11 June 2013
The task is to produce a Flowcode flowchart that lights a lamp for ten seconds when a switch is pressed.
Although it may not be realistic to use a microcontroller in such a straight-forward application, it illustrates the technique of producing a Flowcode program.
The program itself may form part of a bigger program.
The flowchart sequence will be:
- Check if the switch is pressed.
- If it isn't, go back to the beginning.
- If it is:
- Switch on the lamp.
- Wait for 10 seconds.
- Switch off the lamp.
- Go back to the beginning.
It takes such a short time for the microcontroller to carry this out, that we don't need to worry whether the switch latches on or not.
- Open Flowcode.
- On the Startup screen, click on 'New embedded project'. (See Opening Flowcode
- The Project Options dialogue box opens.
- (Click on the link for a full explanation of all the options available.)
- Accept the default settings by clicking on 'OK'.
- An empty flowchart window opens, which may contain other items such as a System Panel, Dashboard Panel, Properties Panel etc.
- These can be revealed or hidden using the View menu.
- Set up the flowchart window so that you can see the System Panel and the Properties Panel.
- The flowchart window should resemble the one shown below (depending on the configuration.)
- The System Panel and Properties Panel can be moved by 'clicking and dragging the title bar at the top of each panel.
- Drag and drop a 'Loop' icon between the Begin and End icons.
- The 'Loop' icon makes the microcontroller repeatedly run through the program, (though the icon can be configured to limit the number of times this happens.)
- Inside the loop, drag and drop an 'Input' icon from the Icons toolbar,. (See Tools and Views.)
- This will